Endoscopic ultrasound with biopsy of omental mass for cholangiocarcinoma diagnosis in cirrhosis

Figure 1 Endoscopic ultrasound. A: Omental nodule; B. Para-aortic lymph node; C: Fine needle aspiration of lymph node; LN: Lymph node.

Figure 2 Lymph node biopsy. A: Hematoxylin and eosin immunohistochemistry of the lymph node; B: Cytokeratin-19 immunohistochemistry of the lymph node.

Figure 3 Omental nodule. A: Hematoxylin and eosin immunohistochemitry of the omental nodule; B: Cytokeratin-19 immunohistochemistry of the omental nodule (high sensitivity, high specificity); C: Carcinogenic-embryonic antigen immunohistochemistry of the omental nodule (high sensitivity, low specificity); D: Wilm’s Tumor-1 immunohistochemistry of the omental nodule (mesenchymal marker).